Utah Code Ann. § 15A-4-201 – General provision.

(1) The amendments in this part are adopted as amendments to the IRC to be applicable to specified jurisdiction.
(2) A local amendment to the following which may be applied to detached one and two family dwellings and multiple single family dwellings shall be applicable to the corresponding provisions of the IRC for the local jurisdiction to which the local amendment has been made:
1. (a) IBC under Part 1, Local Amendments to IBC;
2. (b) IPC under Part 3, Local Amendments to IPC;
3. (c) IMC under Part 4, Local Amendments to IMC;
4. (d) IFGC under Part 5, Local Amendments to IFGC;
5. (e) NEC under Part 6, Local Amendments to NEC; and
6. (f) IECC under Part 7, Local Amendments to IECC.